Forged fulcrum for brake-beams.



F. j. SCHROEDER. FORGED FULCRUM FOR BRAKE BEAMS.

CATION FILED 5. 1915- 1,21 139$ Patented Jan. 9,1917.

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Ema; 25 24 I f I? y 35% w 7 Q H V alike/La llNl lED TATES PATENT FREDERICK J. SCI-IROEDER, OF CLEVELAND, OHIO, ASSIGIQ'QB, BY IVIESNE ASSIGNMENTS, TO THE DAMASCUS BRAKE BEAIVZ C(l, OF CLEVELAND, OHIO, A CORPORATION OF OHIO, (INCORPORATED FEBRUARY 25, 1916.)

FORGED FULCRUM FOB BRAKE-BEAMS.

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Application filed November 15, 1915.

To all whomz't may concern Be it known that I, FREDERICK J. Sonnounnn, a citizen of the United States, residing at Cleveland, in the county of Cuyahog'a and State of Ohio, have invented certain new and useful Improvements in Forged F ulcrums for Brake-Beams, of which the following is a specification.

The present invention relates to brake beam fulcrums of the novel type described in my copending application, Serial No. 58319, filed ()ctober 28, 1915, and comprising a pair of spaced metal. bars lntving an integral head forged upon their ends with a diagonally disposed recessed seat for a truss member of the beam, and with originally integral portions of both of the spaced bars worked into and constituting portions of both side walls of the seat; and resides broadly in such a fulcrum when provided with an integrally forged third point support extended from one side wall of the recessed seat; and more specifically in such a fulcrum in which the metal of the third point support constituted an originally integral portion. of one bar of the fulcrum, or still more specifically, a third point suspension fulcrum of the type described, in which the third point support comprises two spaced ears, the metal constituting both of which formed an originally integral portion of the same side bar.

Brake beam fulcrums have heretofore been provided with integral third point supports, but they have been cast fulcrums. Forged fulcrums have heretofore been provided with third point supports, but they have been in the form of added parts riveted to or otherwise engaged with the fulcrumed members.

The advantages of forging integralthird point supports upon forged fulcrums are, first, the production of a lighter structure for a given strength; and, second, when the support is formed integrally with a truss member seat, both walls of which embody originally integral portions of both bars, the tendency of the support to tear away from the fulcrum is avoided, and the tendency of the truss member to tear the lower side of the seat from the vertically supported upper side of the seat is wholly removed; and a cheaper production is insured.

Specification of Letters Patent.

Patented Jan. 1917.

Serial No. 61,661.

One embodiment of the present invention is illustrated in the accompanying drawing.

Figure 1 shows a side elevation of a brake beam fulcrum; with parts of the brake beam indicated in finer lines and sectioned; Fig. 72, top plan view of Fig. 1, and Fig. 3, an end view of Fig. l seen from the right. Fig. is a longitudinal section of a pair of dies with fulcrum bars constituting the blank located therein and with the plungerthat cooperates therewith, in performing the first step in the production of a fulcrum embodying the present invention; Fig. 5 is a transverse section through the dies shown in Fig. l; Fig. 6 is an end view of the blank after the first forging step, or that which is produced by forcing the plunger of Fig. & inward; Fig. 7 is a view corresponding to n ig. at, showing the blank of Fig. 6 confined.

in the dies of Fig. l and subjected to a finishing plunger to produce the head shown in Fig. 3.

The brake beam fulcrum constituting the subject of the present invention is forged out of two parallel bars constituting either one bent piece or two separate pieces, preferably in accordance with the process described in my application, Serial No. 61,662, filed sin ultaneously herewith, the general principles of which will be understood upon reference to Figs. 3 to 7 of the accompanying drawings.

T he process constituting the subject matter of my aforesaid application Serial No. (31,662, follows in general the process covered by my U. S. Letters Patent No. 1,161,737, granted November 23, 1915, and produces the forged metal fulcrum of my application Serial No. 58,5l19, filed October 28, 1915, according to which the spaced bars 10 and 11 constituting the fulcrum, have their ends 10 and 11 forged into a solid head with a diagonally disposed tension member seat A, the metal constituting the upper and lower walls of which formed originally integral parts of both bars. As will be seen by reference to Figs. d and 7, the metal of these ends, at the time of its rough distribution to form the head, is thrown largely upward into the space 24 of the dies 25, 26, by the plunger 27, in order to properly locate it for the production of the support 16. It will further be seen that notwithstanding the diagonal relation of the ends developed by so-called pinching of the bars previous to their introduction into the dies 25, 26, the bar 10 lies in a position and presents its end 10 in a position that causes it to furnish the main portion of the metal for the support 16. This condition is favored by making the end 10 longer than the end 11 and thus supplying the additional stock required.

It will further be seen from an inspection of the method of producing the fulcrum,

that while the metal of each bar is displaced in a manner to cause it to lie on both sides or constitute a portion of both side walls of the recessed tension member seat legthat is ultimately formed, the support 16 is constituted mainly by metal that formed an originally integral portion of the upper bar 10, and embodies the several conditions of superiority hereinbefore referred to. By subjecting the partially completed blank of Fig. 6 to the action suggested in Fig. 7, the support 16 is filled out to ultimate shape, by displacin the intermediate portion of the metal and leaving the support in the form of two ears 16 with a slot between them. These ears 16. are greatly strengthened by continuing their dividing slot downward to the base of the seat 14, and causing the ears to meet the upper side wall of the tension member seat through means of substantially pyramidal portions as shown.

The fulcrum is provided with the usual bolt holes 17, 18 in the compression member head 12 and in the arms 10, 11. In addition, holes 19 are provided in the ears 16 for suspension link and bolt 20, 21.

'It will be noted that the vertical center line of the bearing falls in the vertical plane running longitudinally through the axis of the brake beam fulcrum, as best seen in Fig. 3, and that likewise the vertical center line of the ears 16 lies in the same vertical plane as the center line of the tension member 15, as seen in Fig. 1.

In order to hold the compression member 18 rigidly on its head 12, the usual clip and bolt arrangement 22, 23 is provided- I claim 1. A forged metal brake beam fulcrum with third point support comprising a pair of substantially parallel wrought metal 1 bars spaced apart to provide a lever slotbetween them; said bars having their ends forged into a solid integral head provided with a recessed seat for a truss member, and with a third point support on said head; the metal constituting the third point support forming an originally integral'part of one of the bars.

A forged metal brake beam fulcrum with third point support comprising a pair of substantially parallel wrought metal bars spaced apart to provide a lever slot with third point support comprising a pair of substantially parallel wrought metal bars spaced apart to provide a lever slot between them; said bars having their ends forged into a solid integral head provided with a recessed seat for a truss member. and with a third point support on said head; the metal constituting the third point support forming an originally integral part of one of the bars; and the portions of said solid head forming the opposite walls of the truss member seat, constituting originally integral portions of both of said spaced bars.

a. A forged metal brake beam fulcrum having an integral third point support; said fulcrum comprising a pair of substantially parallel wrought metal bars spaced apart to provide a lever slot between them; said bars having their ends forged into a solid integral head provided with a recessed seat for a truss member; said third point support comprising a pair of cars projecting integrally from one side wall of said seat and having between them, a separating slot extending through the seat wall to the base of the seat; the metal constituting said ears forming originally integral portions of one of the spaced bars, and the portions of the seat wall divided by said slot embodying in their structure metal that formed originally integral portions of different bars.

The foregoing specification signed at Cleveland, Ohio, this 27th day of September, 1915.

FREDERICK J. SGHROEDER.

copies of this patent may be obtained for five cents each, by addressing the Gommissioner of Patents, Washington, I). G. 

